The thing on a tank is called a “muzzle brake” and it greatly reduces felt recoil. Also available on many smaller guns. https://en.m.wikipedia.org/wiki/Muzzle_

The thing on a tank is called a “muzzle brake” and it greatly reduces felt recoil. Also available on many smaller guns. https://en.m.wikipedia.org/wiki/Muzzle_brake https://en.m.wikipedia.org/wiki/Muzzle_brake